It was some twenty yards wide; but I could not see how far inland it ran, on account of the immense trees that overhung it on every side, springing up in great numbers just behind the low border of mangroves. Holding fast by one of these bushes, I was leaning forward over the water, looking hard into the gloom, to gain, if possible, some notion of the extent of the inlet and the distance round it, when Morton grasped my arm suddenly-- "What is that, under the trees on the opposite shore?" whispered he; "is it not a boat?" Looking in the direction in which he pointed, I could distinguish some object on the opposite side of the inlet, that might from its size and shape be a boat of some kind, as he supposed, and, continuing to gaze steadily, I made out quite plainly, against the dark masses of foliage on the further shore, what appeared to be a white mast. A profound silence reigned all around us, and while I was still peering into the heavy shadow of the trees, I heard a sound which resembled a deep, and long-drawn sigh, followed by an exclamation, as of a person in bodily pain. "We must get round to the other side," whispered Morton, "and see what this means." We backed out of the mangroves with the utmost caution, and inch by inch: when we had got to such a distance as to render this extreme circumspection no longer necessary, we commenced a wide circuit around the inlet, which proved to be only a small cove, or indentation in the shore, extending less than a hundred yards inland. In approaching it again on the opposite side, we resumed all our former stealthiness of movement, feeling that our lives in all probability depended upon our caution. When, at last, we had got, as we supposed, quite near the place where we had seen the boat, we proceeded, by creeping on our hands and knees through the bushes for short distances, and then rising and looking about, to ascertain our position. It was so dark, and the undergrowth was so dense--the moonlight scarcely penetrating the thick foliage--that nothing could be distinguished at the distance even of a few yards, and there was some danger that we might come suddenly, and before we were aware, upon those whom we supposed to be already so near us. While thus blindly groping our way towards the edge of the inlet, I heard a voice almost beside me, which said-- "Will they never come back?--Are they going to leave us here to starve?" The voice was that of Johnny's beyond the possibility of mistake. Turning in the direction from which it proceeded, I saw a little to the right three figures upon the ground at the foot of a large casuarina. Another voice, as familiar, almost immediately answered-- "I only fear that they will return too soon: have patience! in a little while I shall have gnawed through this rope, and then I do not despair of being able to get my hands free also." This was enough to show how matters stood.